Block-molding machine.



W. H. BARTBN.' BLOCK MOLDING MACHINE. APr LIoATIoN FILED JUNE 24, 1910.

1,093,242. Patented Apr. 14, 1914.

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WILLIAM HENRY BART'EN, OF GORDON, NEBRASKA.

BLOCK-MOLDING MACHINE.

State of Nebraska, have invented certain new and useful Improvements in Block-ldolding Machines, of which the following is a specification.

The object of this invention is to provide improved means for molding blocks of any desirable size, quality, shape, and mixturef To accomplish th1s the machlne 1s ad ust-' able for the different requirements.

provide improved means for molding one or more blocks of composition (such as Portland cement concrete) and forcing said blocks out of the molds.

drawings, in which Figure 1 is a perspective view of the device for forcing the block or blocks out of the mold shown by Fig. 2 in the drawings. Fig. 2 is the form in which the blocks are molded. Fig. 3 is a pallet on which the form is placed when the blocks are being molded. Fig. 4: is a pallet required at times; to force a block out of its form or mold. Fig. 5 is a handle sometimes required to help in forcing the blocks out of the form or mold. Fig. 6 is a removable partition (Z showing notches r 1*.

All of the figures in the drawing are in:

perspective.

In the construction of the machine the form or mold as shown in Fig. 2 of the drawing, a a are the side pieces containing slots 0 0 0 0 to hold movable partitions (Z (Z. Z) Z) are the end pieces, said side pieces and said end pieces are held firmly together as shown in the drawing by rods, bolts or the like in positions substantially as shown by 0 c 0 c. Said rods 0 c 0 0 also serve as handles by help of which the mold or form is drawn off the blocks after they are formed in the mold.

Fig. 3 is a pallet which consists of the flat part Z a little larger in length and breadth than the bottom surface of the mold Fig. 2. To said flat part Z are secured slats m m which project beyond one edge of said part Z on a level with the bottom sides of said slats even with the top surface of the part Z..

Specification of Letters Batent.

Application filed June 24, 1910.

Patented Apr. Mt, 1914:.

Serial No. 568,754.

To part Z is attached on its under side the handle at projecting away from the opposite edge over which slats m m project, said handle a is removably attached by screws, bolts or the like. The part for moving the blocks from the mold is formed of the flat part it of a size to fit the inside of the form Fig. 2 when the partitions (Z (Z are removed, to the part it aresecured the supports 6 e e and below these supports are attached the plates f f f separated by the openings 9 9 said openings receiving the partitions d (Z 1 when the machine is operating to force the A further object of this invention is toblocks out of the mold. On top of the flat part it are mounted the levers j j by means of fulcrums as 'Z 2', said levers have at their ends the hooks 7s 70, said levers being removj able by taking outthe removable fastenings My invention consists in the construction, arrangement, and combination of elements hereinafter set forth, pointed out in my claim, and illustrated by the accompanying g) 72. When conditions require it the partitions (Z (Z can be firmly fastened in the form and partitions of thicker size can be used and fastened by means of screws or nails. The slots 0 0 are made so narrow as not to leave any perceptible projections on the blocks when the partitions cZ (Z are removed and a block is being formed of the entire size of the inside of the mold. When the partitions are removed it is often most convenient to use a pallet like Fig. 4 to place on top of the block and by holding down the pallet raise the form off the block, and when necessary the levers j j are attached to said pallet 4 and used to force the blocks out of the form.

The several means provided in operating the machine, forcing the blocks out of the forms, etc., are required to make the machine adaptable for the various kinds of blocks it has to produce as a large block requires more powerful means to force it out of the form. Some concrete mixtures are more adhesive to the insides of the form and require more powerful means to force the blocks out of the mold, and when the blocks force out easily the means best adapted are used requiring a less number of the machine parts to be used enabling the operator to produce more blocks and do it easier.

The downward pressure on the blocks in removing them from the form is provided for to make the blocks more dense and make them conform to the surface on which they are left to cure to prevent them from cracking and breaking thus avoiding a difliculty other machines now in use cannot avoid.

The machine can be made of metal or.

wood preferably of wood and thus is not expensive to construct and produces most excellent results and is light in weight making it easy to operate and easy to carry from place to place and to use in small or crowded places.

The operation of the machine is as follows: The pallet Fig. 3 is placed on a convenient support as on top of a mortar box. Place the mold shown in Fig. 2 on the pallet shown in Fig. 3, and shovel the block making mixture into the mold and if the mold is deep say over four inches tamp 1n the mixture firmly. After the mold is full and well tamped, smooth off the top with a shovel or board, take up the pallet 3 with the mold containing the blocks still on the pallet, to a shelf, or plank, rest the projections at m on the shelf or plank and shove the mold containing the blocks over on to the shelf or plank, place on top of the molded blocks the device shown in Fig. 1, place hooks h h in connection with rods 0 o and press down the handles 7' j at their ends 9 g. This causes the blocks to be compressed more dense especially at the surfaces where greatest density is required and then causes the form shown in Fig. 2 to rise above the blocks and then the machine can be taken away from the blocks. Proceed as before in making more blocks. Several blocks can be put on each shelf or plank and the plank can be ricked above each other with supports thicker than the blocks between the plank so that the plank will not rest on the blocks. The blocks are then cured in the same manner as cement products are generally cured. When the molds are shallow up to four inches deep it is only necessary to shovel the mixture into the molds until they are heaping full and then pound down into the molds with the back of the shovel the mixture, smooth off the top with the shovel and the blocks are ready to be re moved from the molds. Vhen making large blocks the full size of the entire inside of the mold, take out the partitions d (i, remove fastenings p 7), turn the device upside down and fasten the supports 2' i on the faces of f f and thus the flat part 72, comes into service upon the block to force the block out of the mold in the manner as set forth above. In cases when the material for making the blocks is such that the blocks are easily forced out of the mold, remove the levers j j and their supports and force the blocks out of the mold by placing the foot or the knee on the part hand draw up the mold by taking hold of 0 c with the hands and draw the mold up from the blocln And where still less energy is required place the palms of the hands on the end of h and the fingers under 0 c draw up the mold till it is free from the blocks. When the machine is so large that the fingers cannot reach the mold, and then when the blocks are formed in the mold a pallet is placed on top, bot

tom and top pallets are held in place and the mold turned upside down then shoved on the plank, the device for forcing out the blocks is placed on the plate and plate and. block are forced out of the form together;

Then after the machine is taken away" from the block the design or core plate can be taken off the top of the block. The blocks are placed directly on the ground in this way: Take a piece of thin metal a little larger than the under side of the form, place it on the ground where it is desired to cure the block, put the form on this sheet metal, tamp the mixture in the form, smooth off the top, pull out from under the form the metal sheet, then force the block out of the form asspecified above. Members f f f are preferably removably attached to supports 6 e e as by means of screws or the like, so that members of'different shapes (or sizes) can be attached quickly to form openings" g g of any desired angle or shape adapted to the angle or shape of partitions 03 (Z, said supports 6 e 6 being also removably attached to h by means of screws to allow said supports to be removed and to be again attached to said member h in any desired position or angle so all can be arranged to operate in harmony with the position and shape of any desired number of partitions (Z (Z. The removable partitions (Z (Z are held from dropping out of the slots 0 0 0 0 by a removable means as screws 8 s passing through the sides a a into slots 00 0 0 thence into nicks or notches r 1 as shown in Figs. 2

and 6 of the drawings. It is evident that said removable partitions can be inserted in the form at any desirable angle when proper slots are cut in proper places in the sides or end pieces or both of the form to make blocks for use in gables, etc., of buildings, and also that when said movable partitions are made thick enough slots can be out in them and also in the ends of the form to insert movable partitions between said 'movable'partitions, and between said movable partitions and the ends of the form.

I claim as my invention- An apparatus for molding blocks comprising a pallet, a form open at its upper and lower sides adapted to rest upon the pallet and provided at its ends with rods, 2.

fiat plate, levers fulcrumed upon the plate, pressed between the said plate and the palhooks carried by the levers and engageable let and the sides of the form. 10 with the rods, supports attached to the un- In testimony whereof I aflix my signature derside of the said plate and a plate carried in presence of two witnesses.

' by the supports and adapted to fit within WILLIAM HENRY BARTEN.

the form, the parts being so arranged that Witnesses: when the last mentioned plate is moved into J. F. ONEIL, the form the material in the form is com- R. E. CLAPP.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

